<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>0409-01nth-child()</title>
    <style>
        body{
            background-color: #ccc;
        }
        p{
            font-size:100px;
            text-align: center;
            margin:200px auto;
            font-weight:bold;
            text-shadow:1px 1px 1px black,-1px -1px 1px #fff ;
            color:#ccc
        }
        .sanjiao{
            border-style: solid;
            border-width: 20px;
            border-color: red;
            border-left-color: #000;:;
            width: 200px;
        }
        .jianbian{
            width: 400px;
            height: 400px;
            border-radius: 400px;
            background: -webkit-linear-gradient(left,blue,yellow,red);
        }
    </style>
</head>
<body>
<p>八二年的矿泉水</p>
<div class="sanjiao"></div>
<div class="jianbian"></div>
<script>

</script>
</body>
</html>